DTC B2233: Front Camera Circuit Open

DTC detecting condition: 

Detected when front camera abnormality is detected.

Trouble symptom: 

Front camera does not work.

Wiring diagram: 

Front view monitoring system Ref. to WIRING SYSTEM (CROSSTREK MODEL (EXCEPT FOR HEV))>FRONT VIEW MONITOR .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor, perform the clear memory of [Multi-Function Display]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
   3. Turn the ignition switch to OFF.
   4. Disconnect the MFD connector and reconnect it.
   5. Turn the ignition switch to ON.
   6. Read the DTC of [Multi-Function Display] using the Subaru Select Monitor. Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC B2233 displayed? (Current malfunction)

   Yes:  Go to  2.

   No:  Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
2. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY)  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the front camera connector and MFD connector.
   3. Turn the ignition switch to ON.
   4. Using a tester, measure the voltage between the MFD connector and chassis ground.

      Connector and terminal 

      (i122) No. 2 (+) - Chassis ground (-):

   Is the voltage 1.5 V or less?

   Yes:  Go to  3.

   No:  Repair or replace the short circuit of the harness.

3. CHECK HARNESS (OPEN CIRCUIT)  .
   1. Turn the ignition switch to OFF.
   2. Using a tester, measure the resistance between front camera connector and MFD connector.

      Connector and terminal 

      (i122) No. 2 - (B284) No. 1:

   Is the resistance less than 10 Ω?

   Yes:  Go to  4.

   No:  Repair or replace the open circuit of harness.

4. CHECK DTC  .
   1. Replace the front camera. Ref. to ENTERTAINMENT AND MONITORING>CAMERA>REMOVAL>FRONT .
   2. Turn the ignition switch to ON.
   3. Read the DTC of [Multi-Function Display] using the Subaru Select Monitor. Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC B2233 displayed? (Current malfunction)

   Yes:  Replace the MFD. Ref. to INSTRUMENTATION/DRIVER INFO>MULTI-FUNCTION DISPLAY (MFD) .

   No:  Malfunction occurred in the front camera.